Influence
of Outflow Tract Reconstruction on Long-Term Right Ventricular Function and
Pulmonary Regurgitation After Repair of Tetralogy of Fallot: A Clinical
Magnetic Resonance Imaging Study

1Department of Pediatrics, National
Taiwan University Hospital, Taipei, Taiwan; 2Institute of Biomedical
Engineering, National Yang-Ming University; 3Department of Medical
Imaging, National Taiwan University Hospital; 4Department of
Surgery, National Taiwan University Hospital; 5Center for
Optoelectronic Biomedicine, College of Medicine, National Taiwan University

The purpose of this study was to evaluate the influence
of different types of right ventricular outflow tract (RVOT) reconstruction
during repair of tetralogy of Fallot (TOF) on long-term right ventricular
function and pulmonary regurgitation (PR) severity using cardiac magnetic
resonance (CMR). Our results showed that the use of transannular patch (TAP)
during RVOT reconstruction was significantly associated with advanced degree of
PR, increased extent of RV dilatation, and higher incidence of RVOT aneurysm or
akinesia late after TOF correction. Pericardial monocuspid valve used for TAP
failed to demonstrate long-term beneficial effect in the prevention of PR and
RV dilatation.